PubChem's defined-configuration no-DAC reference is CID 56841945: C152H252N44O42, 3367.9 g/mol, with none listed in its CAS field. PubChem's ipamorelin record is CID 9831659: CAS 170851-70-4, C38H49N9O5, 711.9 g/mol. For documentation associated with CJC/Ipamorelin, these are two selected database references; neither selection establishes either component's identity in a Glow lot.
The comparison below keeps structural identifiers separate from certificate identifiers. It explains why a CJC 1295 sequence needs configuration and terminal notation, why an ipamorelin structure needs expanded residue symbols, and why each peptide keeps its own formula and mass. The CJC-1295 / Ipamorelin overview covers the broader introductory topic.
Which two primary records anchor this reference?
The two anchors are PubChem's defined-configuration 29-residue amide record and its ipamorelin record. A compound identifier, abbreviated CID, selects an entry within PubChem; it is separate from the CAS number shown in a record's dedicated CAS field. The first anchor specifies a no-DAC structure and the second a five-residue amide. Each formula and molecular weight belongs to its own selected entry. The table names the source beside every row so a copied row preserves that connection. Its CAS wording also preserves a limit: an empty dedicated field does not establish that no registration exists elsewhere. Keep the database reference beside the document whose wording is being compared with it.
PubChem CID 56841945 supplies the defined-configuration no-DAC reference: C152H252N44O42, 3367.9 g/mol, with none listed in the dedicated CAS field. PubChem CID 9831659 supplies the ipamorelin reference: CAS 170851-70-4, C38H49N9O5, 711.9 g/mol. These entries anchor a comparison of two recorded structures. Neither entry is evidence identifying a component in a particular lot.
| Record description | PubChem CID | CAS field | Formula | Molecular weight | Form described | Registry source |
|---|---|---|---|---|---|---|
| Defined-configuration 29-residue amide | 56841945 | none listed in CAS field | C152H252N44O42 | 3367.9 g/mol | No-DAC reference with specified configuration and terminal amide | PubChem record |
| Ipamorelin | 9831659 | 170851-70-4 | C38H49N9O5 | 711.9 g/mol | Five-residue peptide amide | PubChem record |
Keep the units when transcribing a molecular weight. Here g/mol identifies the molar quantity printed with the reference, while the decimal place preserves the source's display.
Which CJC-1295 records describe different structures?
The CJC-1295 name family spans records with different structural descriptions. PubChem's DAC entry includes an additional terminal lysine amide carrying an N6 modification. Two no-DAC entries share an atom count and printed molecular weight, but differ in their specification of configuration, meaning the spatial arrangement recorded for the structure. The defined entry is the reference selected here; the other leaves configuration unspecified. That distinction survives even when the formula cells look identical. A formula counts atoms without giving every detail needed to specify their arrangement. Consequently, record selection cannot stop when a molecular weight agrees. Carry the CID, configuration description and terminal modification together. The comparison below identifies database differences only and does not assign a DAC status or any other chemical form to the lot discussed later.
| Record/form | CID | Dedicated CAS field | Formula | Molecular weight | Structural distinction | Source |
|---|---|---|---|---|---|---|
| Cjc 1295, DAC structure | 91971820 | 446262-90-4 | C165H269N47O46 | 3647.2 g/mol | Additional terminal lysine amide with N6 modification | PubChem DAC entry |
| No-DAC amide, defined configuration | 56841945 | none listed in CAS field | C152H252N44O42 | 3367.9 g/mol | Configuration specified | PubChem defined entry |
| CJC1295 Without DAC | 91976842 | none listed in CAS field | C152H252N44O42 | 3367.9 g/mol | Configuration unspecified | PubChem unspecified entry |
PubChem titles CID 91976842 CJC1295 Without DAC, the 29-residue amide. Unspecified configuration is a limitation in a database description, not evidence of a particular physical mixture. For the explanation of DAC terminology, see CJC-1295 with and without DAC.
Why can a synonym point toward the wrong form?
A synonym is a name associated with a database entry, and its wording may not settle which structure that entry specifies. PubChem's no-DAC records illustrate the problem directly: their contributed synonyms include DAC wording. A reader who chooses by that wording alone can carry the wrong structural assumption into a comparison. Registry-format strings need similar care because the dedicated CAS field, a Deprecated CAS annotation and a contributed synonym are different locations in the record. Record the location along with the string. Searches using mod GRF 1-29 or another short label are starting points for finding a candidate, not substitutes for inspecting that candidate's description. A familiar name by itself leaves configuration, terminal modification and the intended reference unresolved.
CJC-1295 synonyms do not uniquely choose a structure. PubChem's no-DAC entries themselves include DAC-worded synonyms. Compare a candidate's CID, molecular formula, configuration, terminal modification and CAS-field category before adopting it as a reference. A contributed name or registry-format string retains its original category; transcribing it does not turn it into a dedicated CAS annotation.
| String | Location recorded by PubChem | What to preserve in a transcription | Source |
|---|---|---|---|
| 446262-90-4 | CAS field on CID 91971820 | Dedicated CAS annotation for the DAC record | PubChem 91971820 |
| 863288-34-0 | Deprecated CAS on CID 91971820 | Deprecated category, rather than current CAS-field wording | PubChem 91971820 |
| 863288-34-0 and 446036-97-1 | Contributed synonyms on CID 56841945 | Synonym status; the dedicated CAS field has none listed | PubChem 56841945 |
Teaching example: a document supplies a label name and a registry-format string, but no structural description. Enter both as document wording and leave the selected CID unresolved. Do not promote the string to a stronger field category merely to complete the row.
How is the 29-residue CJC sequence written?
PubChem's selected no-DAC reference writes a 29-residue chain with D-Ala at position 2 and an amide at the final end. A residue is one amino-acid unit within the chain. Expanded three-letter notation keeps each unit readable, while a one-letter display compresses the same ordered list. The compact display alone does not preserve every configuration or terminal detail, so copy those details alongside it. In the expanded notation, the leading H marks the beginning of the chain and NH2 marks the terminal amide. Neither marker adds another amino-acid residue to the count. The IUPAC/IUB peptide-symbolism guidance provides the notation framework; PubChem supplies the actual sequence used in this reference.
| Display | Sequence as printed | Reading requirement | Source |
|---|---|---|---|
| Expanded notation | H-Tyr-D-Ala-Asp-Ala-Ile-Phe-Thr-Gln-Ser-Tyr-Arg-Lys-Val-Leu-Ala-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Leu-Ser-Arg-NH2 | Preserve D-Ala at position 2 and the NH2 ending | PubChem sequence |
| Compact display | YADAIFTQSYRKVLAQLSARKLLQDILSR | Attach the specified configuration and terminal amide separately | PubChem sequence |
A useful transcription check is to keep three fields visible: residue order, configuration and terminal notation. Check the second unit against D-Ala, then check the final NH2 separately. A complete residue count with a missing terminal annotation is still an incomplete structural description. IUPAC/IUB peptide symbolism explains the chain notation.
How is the ipamorelin structure written as a sequence?
Ipamorelin's expanded sequence in the PubChem record preserves unusual residues and explicit D designations that a compact display cannot fully express. The record prints H-Aib-His-D-2Nal-D-Phe-Lys-NH2 as condensed notation and also carries the synonym spelling Aib-His-D-2-Nal-D-Phe-Lys-NH2. Keep each spelling as printed when citing its field, then use a notation key to explain it. Aib means 2-aminoisobutyric acid; D-2-Nal means D-2-naphthylalanine; D-Phe means D-phenylalanine. His is the histidine residue, whereas the separate leading H is terminal notation. NH2 identifies the C-terminal amide. PubChem also prints XHXFK, but those five letters should travel with the expanded sequence because the unusual-residue identities and explicit configuration are otherwise lost. The IUPAC/IUB residue-symbol guidance supports defining unusual symbols when presenting them. For general sequence notation, see the peptide structure reference.
PubChem's ipamorelin record carries the expanded synonym Aib-His-D-2-Nal-D-Phe-Lys-NH2. Aib identifies 2-aminoisobutyric acid, D-2-Nal identifies D-2-naphthylalanine, D-Phe identifies D-phenylalanine, and NH2 marks the terminal amide. The compact XHXFK display does not fully preserve those details. Keep the expanded notation beside it when recording the structure associated with PubChem CID 9831659.
| Record display or symbol | Meaning for transcription | Source |
|---|---|---|
H-Aib-His-D-2Nal-D-Phe-Lys-NH2 | Condensed notation; initial H and final NH2 describe the ends | PubChem ipamorelin |
Aib-His-D-2-Nal-D-Phe-Lys-NH2 | Contributed synonym spelling; retain its D prefixes | PubChem ipamorelin |
XHXFK | Compact display; retain an expanded companion | PubChem ipamorelin |
| Aib; D-2-Nal; D-Phe | 2-aminoisobutyric acid; D-2-naphthylalanine; D-phenylalanine | IUPAC/IUB residue symbols, notation definitions supplied with the PubChem sequence |
What do acetate names establish?
An acetate name in a synonym list establishes that the wording appears there, but does not by itself specify a salt-inclusive formula. PubChem's ipamorelin entry includes IPAMORELIN ACETATE among contributed synonyms, while the reference values selected here remain those printed for that entry's described structure. An acetate synonym is therefore not a basis for calculating a new ipamorelin molecular weight. The no-DAC CJC reference likewise contains acetate wording among contributed names. Distinguish that name evidence from a separately specified acetate record with an explicit component relationship. A counterion is the accompanying ion specified in a salt description; its identity and proportion require their own documentation. Unknown counterion information should remain unknown rather than being filled from the nearest familiar synonym. No salt composition is assigned to the lot in this article.
- For ipamorelin acetate wording, PubChem CID 9831659 supplies synonym evidence only; this reference adds no salt-inclusive formula or mass.
- For CJC acetate wording, PubChem CID 56841945 includes DAC:GRF acetate among contributed synonyms despite the no-DAC structure selected here.
This comparison uses the synonym records cited below. It gives no acetate-record identifiers or numerical acetate comparison.
What must an identity comparison address for two peptides?
Two named peptides require two component-specific reference descriptions and corresponding mass assignments. For each, record the selected form, sequence, configuration, terminal notation, mass convention and ion or charge interpretation. PubChem's printed average molecular weights alone are not observed signals. A comparison lacking one component's assignment remains incomplete, and no observed masses or analytical identity conclusions are reported in this reference.
Instrument-method explanation belongs to the HPLC and mass spectrometry guide. For a certificate-reading example, see the HPLC chromatogram reading guide.
Which fields and codes appear for this lot?
The selected CJC/Ipamorelin lot record links a certificate with two page-specific accession and Search Code pairs. These codes identify document references; they do not choose either peptide's registry structure. The record lists a declared total of 10 mg, which is a catalog declaration, not a restated Net Peptide Content value. The vial string is 260202QLCP10, while the certificate prints 260202-QL-CP10-01. Ignoring hyphens leaves the vial's letters and digits followed by the printed suffix 01, which must be kept. The table inventories dates, codes and field labels while withholding all analytical values. It covers this one linked document only, without assigning a chemical form to its contents or interpreting the named analytical panels.
The CJC/Ipamorelin product page and the selected lot record provide the document context. Freedom Diagnostics is the laboratory named on the certificate.
| Document location | Printed identifier or label | Bounded reading |
|---|---|---|
| Vial and certificate | 260202QLCP10; 260202-QL-CP10-01; catalog code CP10 | Preserve the full printed suffix 01 when comparing the strings |
| Page 1 lookup pair | Accession Number 2602050100; Search Code Glow2602050100 | Keep this pair together |
| Page 1 dates | Received 02/05/2026; reported 2/9/2026 | Copy the date labels and formatting as printed |
| Page 1 field inventory | Product; Lot; Net Peptide Content; Purity; Identity; Appearance | Component-labelled content lines and both names in Identity; no analytical values reproduced |
| Page 1 mass and method labels | Mass Identification: Ipamorelin/CJC-1295; HPLC with UV detection coupled with mass spectrometry | Panel and method wording only |
| Page 2 lookup pair | Accession Number 2602050101; Search Code Glow2602050101 | A separate pair for the second page |
| Page 2 panel | Endotoxin replicates under USP <85> | Labels only; values on the certificate |
The lookup page is cited for its accession and Search Code field names. The pairing certificate article covers the broader two-component document discussion. General field interpretation is in the certificate interpretation guide, and lookup instructions are in the Freedom Diagnostics lookup guide. General reconciliation of lot, sample and report identifiers belongs to the peptide lot traceability reference. Accession 2602050100 identifies a report page, not a registry entry for either peptide, and CID 56841945 is not a certificate code.
CJC-1295 / Ipamorelin is a research reference material. Check lot-specific document availability and the reported methods and findings.
View CJC-1295 / Ipamorelin on the store →Frequently asked questions
Which CJC-1295 molecular weight belongs to the no-DAC record?
PubChem prints 3367.9 g/mol for the selected defined-configuration no-DAC entry, CID 56841945. Use that value with its formula C152H252N44O42 and terminal amide description. A document saying only CJC-1295 molecular weight has left its intended structure unstated. Resolve that omission by obtaining the reference CID or full structural description, rather than selecting a number by familiarity. Keep the document's original wording beside the question of which record it intends.
Why do two no-DAC CIDs share a formula?
PubChem CIDs 56841945 and 91976842 both print C152H252N44O42 and 3367.9 g/mol, but their configuration descriptions differ. The first specifies configuration; the second leaves it unspecified. Formula and average molecular weight do not capture that difference. For a spreadsheet containing only those two columns, add a configuration column and preserve the original CID so the entries remain distinguishable. Unspecified configuration describes missing structural specification in the record and does not establish the composition of any physical mixture.
What is the ipamorelin CAS number?
PubChem CID 9831659 lists 170851-70-4 in its CAS annotations. Preserve both the number and the fact that it comes from that record's CAS field when transcribing it. The same entry also carries INN IPAMORELIN and the code NNC 26-0161, but these names and codes are separate identifier fields. Matching a CAS string alone also leaves any separately asserted acetate composition to be documented.
What do Aib, D-2-Nal and NH2 mean?
In the expanded ipamorelin notation supplied with PubChem CID 9831659, Aib means 2-aminoisobutyric acid, D-2-Nal means D-2-naphthylalanine, and NH2 marks the C-terminal amide. D-Phe separately identifies D-phenylalanine. When transferring the notation between documents, keep these definitions with the sequence rather than leaving a compact string to carry them implicitly. The leading H in the condensed notation describes the chain beginning; His is a residue name. Confusing the two would change how the sequence is read.
Does an ipamorelin acetate synonym specify the salt formula?
No. IPAMORELIN ACETATE is contributed synonym text on PubChem CID 9831659, and that wording alone does not supply a salt-inclusive formula or molecular weight. A citation should identify whether it supports a synonym, a structure or an explicit salt description. If a document states acetate without giving its structural basis, copy the wording and ask for the counterion description and proportion. Do not calculate an additional formula from the synonym or assign the database formula to an unspecified salt composition.
Sources and scope notes
Identifier values are transcribed from the PubChem records cited below, read October 15, 2026.
This reference cites the CJC-1295 and ipamorelin records listed below and gives no salt-inclusive formula or mass.
The lookup page is cited for its accession and Search Code field names.
- NIH/NLM PubChem, CID 91971820, DAC structure Formula, printed molecular weight, CAS categories and structural distinction; no lot finding.
- NIH/NLM PubChem, CID 56841945, defined-configuration no-DAC reference Sequence, formula, molecular weight, CAS-field status and synonym categories.
- NIH/NLM PubChem, CID 91976842, unspecified-configuration entry Description, formula and molecular weight; unspecified configuration is not a mixture finding.
- NIH/NLM PubChem, CID 9831659, Ipamorelin Record read October 15, 2026; identifiers and sequence transcribed as printed.
- IUPAC/IUB nomenclature, residue symbols Configuration prefixes and defining unusual residue symbols.
- IUPAC/IUB nomenclature, peptide symbolism Chain, configuration and terminal notation.
- Freedom Diagnostics Testing, certificate lookup interface Cited for its accession and Search Code field names.